Vinh needs 420 points to have a b average in math. his scores so far are 88, 89, 79, and 77. what is the minimum score he can make on the next test to maintain the b?

Vinh must get 87 in the next test to maintain grade B.

Step-by-step explanation:

Vinh needs 420 points to have a B average in math.

His scores so far are 88, 89, 79, and 77.

Addition of these scores is =

Therefore, the minimum score he can make on the next test to maintain the grade B is :

Hence, Vinh must get 87 in the next test to maintain grade B.

x² + 11x + 18 < 0  

[-11 ± sqrt(121 - 72)]/2 = (-11 ± 7)/2  

solution: (-9, -2)

step-by-step explanation:

at least two

step-by-step explanation: